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Definition of sonde
: any of various devices for testing physical conditions (as at high altitudes, below the earth's surface, or inside the body)
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Recent Examples of sonde from the Web
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A brief whooshing noise was the only indication that a sonde had been released.
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'sonde.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
Origin and Etymology of sonde
French, literally, sounding line — more at sound
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